Abstract: A computer based system and method for processing financial accounts. Each account is defined by multiple daily account balance records. Each daily account balance record is defined by a daily account balance record posting state that defines the types of transactions that may be posted to the daily account record balance at any one time. The various daily account balance records defining a single account may have different daily account balance record posting states, thereby allowing different types of transactions for different account days to be posted to the same account simultaneously. The resulting account processing system and method provides customers greater flexibility in transferring money between accounts and provides banking entities greater flexibility in account processing timing and reducing operational costs.